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Ok i have just installed my latest BIOS version, and tweaked a few settings in the BIOS (HD Audio, disabled. Hybrid SLI, Disabled etc) and my computer seems fine now, i tested my sytem out by transferring 50GB of data to my external HDD, did it without a problem, also i plugged in as many USB's as i could and worked them and the system overtime, again no problems.

I will see if the problem is actually resolved and post if the system interrupts problem reappears.

Yesterday I ran into the same issue! Copying a .sle file of 45 Gb to an E-Sata drive made the system hang.

I think that I know the culprit. When Windows starts copying the Action Center told me that Windows Defender was (suddenly) disabled. So, during the copying process, I restarted Windows Defender and since that moment copy-speed decreased to an amount of 3 Mb/sec. I tryed to cancel the copy-process, but that killed Windows Explorer.

After a reboot I tryed to copy the file again, but then I had Windows Defender disabled manualy. That did the trick. The copy-process went at the normal speed without any hang or interruption whatever.

I never had issues with smaller files and when copying a folder with a large number of files there wasn´t any problem, even when Windows Defender was enabled. This was the first time I copied such a large file.
It seems that Windows Defender has problems with large files, when you want to copy these.

So, from now on, I disable the realtime protection of Windows Defender when I want to copy such a large file.

Same problem here, but fixed, at least for now with the hotfix posted by vram, thanks a lot for that. Just make sure to get the hotfix that match your platform (x86 or 64), because in my case by default it was x86 and i had to change it to the 64. I was having this problem with files not really large, 200Mb+. I installed the hotfix and make a test with a 450Mb file and it worked fine. I will be testing tomorrow with my other external drive and with a flash drive and larger files, if I get problems again I'll let you know.

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